Apparatus for annealing and collodioning gas-light mantles.



I P. VAN MOUWERIK' & C. W. BA L. APPARATUS FOR ANNEALING AND COLLODIONING GAS LI GHT MANTLES.

APPLICATION FILED IAN-31,1917.

1,250,726 H l Patented Dec. 18,1917.

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; APPARATUS FOR'ANNEALING AND COLLODIONING GAS-LIGHT MAN-Tiles) To (ZZZ wkomz't concern.

. this kind, while Be'it known that we, PIii'rER VAN MOUWERIK and CORNELIS WILLEM BAL, manufacturers, subjects of the, Queenofthe Netherlands, residing at Utrecht, the Netherlands, have invented certain new and useful Improvements in an, Apparatus for Annealing and Collodioning Gas-Light Mantles, of which the following is a specification. p

This invention relates to an apparatus for annealing and collodio-ning gaslight mantles, especially those for inverted burners. The apparatus used hitherto for this purpose presentsinany drawbacks,'so that the products obtained are irregular and many man tles are wasted. Moreover the manipulation of the existing apparatus requires much time and considerable dexterity so that it employ experienced workk was necessary to men. v r n q The 'apparatus according to the present invention allows of a greater number of gaslight mantles being annealed and collodioned in less time and with less experienced workmen than with the known apparatus of the product obtained is always of the same regular quality; moreover breakage may practically ,be avoided en'- tirely. n

The invention consists in that the perforated annealing screens, each made in a single piece, are provided, in order to prevent the displacementof the mantles during the annealing and collodioning process, with a U-shaped border and I with transversal stamped slots with upright sides, so that the annealing screens arepre'vented from becoming distorted or from collapsing by the heat of the narrow flame, while the annealing screens areprovided with holes arranged at equal -distances from each other and preferably provided with projecting extensions, preventingthe mantles from moving upward duringthe' collodioning process. i

The accompanying drawing represents'a form of construction of an apparatus according to the invention.

Figure 1 is a plan view of a perforated annealing screen.

Fig. 2 is a section on the line A-B of Fi 1.

Fig. 3 is a section on theline CD of Fig. 1.

Fig. 4.- is aside view of a mantle, attached to a magnesia ring which itself is known.

Fig. 5 is a plan view of Fig. 4.

v Specification of Letters Patent. application fi Ied Jfanuary 31, 19 17. Seria11N'o.;14 5,767. '4

V the annealing" Theperforat'ed screen 1 is madeof a single piece of for the purpose for example bystamping: Inthe screen 1 ring holes 2 are arranged at equal CllStiLllCGS from each other, the ring holes being provided withfprojections '3 Paten ed Dee-1 s; 191:7.

metal or other'material suitable comprising material not removed by the stamp; The projections, which" are sepa: rated by slots4, have projecting extensions 5at their ends." V v p The magnesiarings 10 to which the mantles are aflixedaccord'ing to Figs. 4 and 5 are provided in the usual way: with" claws l1 which are passed from underneaththe screen I through the slots" 4- By rotating the ring lO'about itsaxis after its. introduction into the screen, it is supported by the claws'on the projections 3. The extensions 5 may be flator bent downward, according to' the kind of ring used They are so'arranged that when the mantle and ring are in place, the pro ect1ons 3, and theextensions 5'ex tend overithe ring 10, and the arrangement is such that there is onlyavery small'clearance between the upper surface'of the ring the claws 11 rest upon and the lower surfaces of the extensions,

this being of great importance for theflfol lowing reason. WVhen the mantles,arranged in, the screen, are dippedinto the collodion, the mantles have a tendency to float'i'and',

unless" means are provided for preventing movement of the mantlesythey assume an oblique position and are damaged by contact with thescreenedge; The breakage per;- centage due to this cause is very considerable with'apparatus'used hitherto, as every expert knows by I practice, avoided with the present screen as the up ward floating movement of the mantles is entirely avoided-by the extensions 5.

but; breakage is In order to Prevent the mantles from moving with regar process, the screens, according to'this invention, are provided at both sides d to thenarrow flamesduring with longitudinal U-shaped borders 6 and transversely with slots 7 and upright ribs 8.

The longitudinally arranged U- shaped borders 6 prevent the screen from bending downward during the annealing process of the mantles. As the deflection sometimes one centimeter with the usual apparatus, it will be clear that the mantles occupy difi'erent positions with regard to the narrow fiames so that it is impossible to obtain a regular product. 1:

surpasses The transversely arranged slots 7 allow the bottormwhich is subject to the greatest heat, to expand freely so that it will not become distorteoL' Thef'uprrght sides 8 of the slots 7 prevent the screen from bending in" utjbeing the result.

io iiiexi ol tlila patent ma be obtaincfilor five cents each, by adaiessm me Washington, D. C. p I

Moreover, the apparatus according to the invention simple and easy in operation and saves a good deal of time. While is necessary with'tie usual annealing screens for the mantles to be arranged one by one in their places within the annealing screen underthe narrow flames, it is only requisite with the apparatus according to the invention to. control the two outer mantles; the position of these with regardto the nar raw" flames is correct, then all the intermediateniantles are in correct position'as they ar ef s'itua'ted at fined and equal distances from one another. a V p The screen is provided at each end with a projection 9, only. one of which is shown in the drawings, and by arranging the screen the projections 9 on liked and correctly adjusted supports, the correct position of all Inaantles with regard-to the narrow flames is automatically obtained without any further shifting of the mantles. I After the mantles have been taken out, the screens are immediately readyfor use again, contrary to the usual screens with which it is necessary to think eachtirne of the loose plates and to arrange thein one by one in the screen. For this Work two boys 5% two girls were hitherto required for each workman charged with the annealing process. Apart from the important reduction in the number of workmen, attained by the new apparatus, it should be mentioned that t c breakage of magnesia rings is greatly reduced, while the reakage of the mantles maybe avoided. entirely.

Having now particularly described and ascertained the nature of our said invention and in What manner the same to be per formed, we declare thatwhat we claim is 1. In apparatus for annealing and coll-odi0ning incandescent mantles, a screen tormed from a single piece of material having aplurality of mantle-receiving apertures arranged at equal distances from each other, and having a plurality of the material at the edges of said slots being bent at substantially right angles i'to the plane of the screen, to prevent transverse distortion; i

transverse slots,-

2. n1 a paratustor annealing afrdicol lodioning incandescent mantles, a s reen formed from a single piece of, materi'alhava ing a plurality or mantle re'ceiving. 'aper tures arranged at equal distances from'each other, having a plurality of transverse slots, the material at the edges of said slots being bent at substantially right angles to the plane of the screen, to prevent transverse distortion, and having one of its lOI gitu'dinal edges bent'to substantially prevent longitudinal distortion. 3, In, apparatus for annealing and col{ lodioning incandescent 1nantles,-"a screen ngle piece of material and formedfrom a s1 U-shape, to .r i

having a plurality of manuereceivin ape tures arranged at equal other, the material atthe edges of each ap"erturebeing forined'to provide portions for supporting the mantle ring and other "por-f tions for prey' enti'ng 'ipwa'rd movement of the said ring. I p

4;. In apparatus for annealing and collodioning incandescent mantles, a screen formed from a single piece of inaterial distances from 'each having a plurality of mantle-receiving ap'er tures arranged atjequ'al distances from' each other, the material at the edges of eaclrapen turebeing formed to] provide a plurality'of radial slots, a plurality of inwardly extending projections between said inward extension at one end of each of'said projections.

' In testimony whereof we 'affixf our fsigna turcs; i

slots and n PIETER VAN.MOUVERII- '1 CORNELIS "WILLEM BAL. v 

